Carving-machine.



' No. 861,540. PATBNTED JULY 30, 1907.

P. H. RICHARDS.

GA'RVING MACHINE.

APPLICATION FILED 001'. 1B, 1902.

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OARVING MACHINE. urmonxon nun 001218, 1902.

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THE NORQIS PETEPS CD WA H NC N 5 THE NORRIS PETEVSfiO WASHING1OV B L No. 861,540, PATBNTED JULY 30, 1907.

P. H. RICHARDS. GARVING MACHINE.

APPLICATION FILEDOOTJB, 1902.

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F. H. RICHARDS. GARVING MACHINE. APPLIUATION FILED 0013.18, 1908- sEEETs-sHBnT a.

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FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT.

CARVING-MACHINE Specification of Letters Patent.

Patented July 30, 1907.

Application filed October 18, 1902. Serial No. 127,827.

To all whom "it may concern:

Be it known that 1, FRANCIS H. RICHARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Carving-Machines, of which the following is a specification. Y

My present invention pertains to machinesfor carving moldings and the like, and relates more particularly to machines wherein the operation is continuous, that is, the stock passes through the machine and is operated upon while in continuous motion.

This invention consists in the organization of mechanism for simultaneously feedingthe stock and carrying the tools with the moving stock during their operation thereon; and also consists in providing means whereby a uniform movement may be given the tools during the period of their operation and which uniform movement will be equivalent to the movement of the stock, said stock being uniformly fed through the machine; and so balancing the mechanism with regard to the functions thereof as to secure the least possible vibration and wear in the parts.

Some of the objects of my present invention are to provide a machine wherein the power will be distributed substantially equally among the working parts in regard to the inertia of the parts themselves and to the resistance to be met with in the operation of the machine as possible, to provide means of easy adjustment, and to provide a machine compact in structure, practical in operation, positive in the performance .of its functions and efficient in point of economy and power, output, simplicity, and the facility with which it may be operated and adjusted.

I have illustrated my present invention in one form in a carving machine in the accompanying drawings, in which like parts are designated by like reference characters throughout the several views and in which:

Figure l is a plan view showing a portion of the top of the frame cut away exposing the feed-roll driving mechanism; Fig. 2, a longitudinal vertical section on line W, W of Fig. 1, looking from the right hand; Fig. 3, a similar view on line X, X of Fig. 1; Fig. 4, a vertical cross-section on line Y, Y of Fig. 1; Fig. a similar view on line Z, Z of Fig. 1; and Fig. 6 a diagrammatical representation of the rocking-arm driving mechanism showing in dotted lines ten successive positions of the several parts corresponding to ten positions of the driving shaft separated by equal degrees of rotation and indicated upon the several parts by numerals from 1 to 10.

Referring to the drawings, the machine is mounted in and upon a box-like frame A. A driving shaft 2 is mounted horizontally and transversely of the frame A in bearings 3 and 4 in the side walls of said frame and a bearing 5 in a partition B within said frame. A worm 6 is mounted fast on the driving shaft 2 and meshes with and drives a worm wheel 7 fast on the lower end of the vertical shaft 8 mounted in a bearing 9 projecting from the side wall of the frame A and a bearing 10 in a horizontal partition G in the frame A. A miter gear 11 is mounted fast on the upper end of the shaft 8 and meshes with and drives a miter gear 12 fast on a horizontal shaft 13 in bearings 14 and 15 in the end walls of the frame A. Spiral gears 16 and 17 are mounted fast upon the shaft 13 respectively next the bearings 14 and 15. The spiral gear 16 meshes with the spiral gear 18 fast on a horizontal shaft 19 mounted transversely of the frame A in a bearing 20 in one side wall of the frame A-and a bearing 21 in a partition D in the frame A. The shaft 19 projects through the bearing 21 in the partition D and carries upon its projecting end a fast feed roll 22 the periphery of which projects through and slightly above the floor of the horizontal stock guide 23 mounted on and longitudinally of the frame A. The spiral gear 17 meshes with the spiral gear 24 fast on a horizontal shaft 25 mounted transversely of the frame A in a bearing 26, one side wall of the frame A, and a bearing 27 in the partition D of the frame A. The shaft 25 projects through the bearing 27 in the partition D and carries upon its projecting end a feed roll 28, the periphery of which feed roll 28 projects through and slightly above the floor of the stock guide 23.

The stock shown at 29, in Fig. 1, is adapted to lie in the stock guide 23, and the feed rolls 22 and 28 are adapted to grip the underside of said stock firmly and to insure said grip. An inclosing piece conforming on its inner surface to the face of the stock 29 is secured to said stock guide 23 by screws 31, which inclosing piece 30 prevents the stock rising off the feed roll and insures at all times a positive grip of the underside of the stock by the periphery of the feed rolls. The feed rolls 22 and 28, it will be seen, are rotated in the same direction and at the same speed, and being driven directly from the driving shaft 2 will feed stock along the stock guide 23 at an uniform speed.

A carrier 32 is mounted in guidcways 33, whichguideways are parallel to the stock guide 23. The carrier 32 is mounted to reciprocate parallell'y of the stock guide 23.

A rocking frame 34 is pivoted by means of a shaft 35 journaled in a bearing 36 in the partition B of the frame A and a bearing 37 in a side wall of the frame A. The plane of oscillation of the frame 34 is parallel to the stock guide 23 and perpendicular to the carrier 32.

A shaft 38 is mounted above and parallel to the driving shaft 2 in a bearing 39 in a longitudinal beam E of the frame A, and a bearing 40 in one side wall of the frame A. An eccentric gear 41 is mounted fast on the driving shaft 2 and meshes with and drives a similar eccentric gear 42 mounted fast on the shaft 38. It will be seen that the shaft 38 will be driven at constantly varying velocities but will complete a revolution simultaneously with the completion of a revolution of the driving shaft 2. The shaft 38 is provided with a crank 43, to the wrist pin of which crank a connecting rod 44 is journaled. The connecting rod 44 is connected with one end of a rocking lever 45, which rocking lever 45 is pivoted at 46 on the rocking frame 34. The rocking lever 45 at its other end carries a loose roller 47 which contacts a cam 48 mounted fast on the driving shaft 2.

It will be easily understood that the crank 43 on the shaft 38 could be set in such a manner that if the connecting rod 44 were connected directly to the rocking frame 34 and the parts organized as shown, the upper end of the rocking frame 34 would travel in a forward direction at velocities very close to being uniform.

This mode of organizing the parts is carried out in the present machine, and the slight correction necessary is made by the cam 48 on the driving shaft 2 and then the resultant motion of the crank 43 and the cam 48 is imparted to the rocking frame 34 at the point 46 where the rocking lever 45 is pivoted upon said rocking frame, thereby effecting uniform velocities in the upper end of the rocking frame 34 during the forward movement in its oscillation.

A pivot 49 is horizontally mounted transversely of.

the machine in the upper end of the rocking frame 34 and the gearing and other mechanism is organized and timed to effect the uniform travel just described of this pivot 49 during the forward movement of the rocking frame 34 at the same velocity that is imparted to the peripheries of the feed rolls and consequently to the stock fed thereby. Then at the beginning of the forward movement of the rocking frame 34 the pivot 49 would assume a position directly opposite some point upon the moving stock and maintain said position directly opposite said point throughout the forward movement of the rocking frame 34, passing back during the backward movement of said rocking frame 34 and positioning itself opposite another point upon the moving stock and moving forward at said point to the completion of the forward movement of the rocking frame 34, and so on.

A slide block 50 is pivoted on a pivot 49 on the rock ing lever 34 and is adapted to slide vertically in vertical guideways 51 depending from the underside of the carrier 32 through an aperture in the top of the frame A to the interior of said frame A. Hence it will be seenthat the uniform forward movement imparted to the rocking frame 34 will be imparted to the carrier 32 as the uniform forward movement in said carriers rcciprocation by said rocking frame 34.

A horizontal tool carriage 52 is mounted to reciprocate horizontally and transversely in guideways 53 on the carrier 32. Tools 54 are mounted upon said tool carriage 52 and secured thereon by means of a clamp plate 55 and set screws 56. The tools 54 are'directed toward the stock guide 23 and are adapted to incise the stock 29 upon the approach of said tool carriage'52 to said stock guide 23. The tool carriage 52 is provided with a transverse guideway 57 in its under surface in which transverse guideway a sliding block 58 is adapted to slide. The sliding block 58 is mounted upon a wrist pin 59 of an adjustable crank 60. Said adjustable crank 60 is mounted fast upon the upper projecting end of a shaft 61 which projecting end passes through an elongated aperture in the carrier 32. The shaft 61 is vertically mounted in a bearing 62 in the top of the frame A and a bearing 63 projecting from a side wall of the frame A. A spiral gear 64 is mounted fast upon the lower end of the shaft 61 and meshes with a spiral gear 65 fast on the driving shaft 2. The adjustable crank 60 is set to effect the maximum approach of the tool carriage 52 tr; the stock guide substantially when the carrier 32 is at the center of its forward movement. The sliding block 53 imparts motion to the tool carriage 52 only in a direction transverse ofthe line of reciprocation of the carrier 32, sliding freely in said carriage in a direction parallel-of the line of reciprocation of said carrier 32. The guideway 57 in the under surface of the carriage 52 is also made of sufficient length to allow of the free movement of carrier 32 without contacting the crank 60 and the sliding block carried thereby.

Vertical guideways 66 are formed on the carrier 32 at that side nearest the stock guide 23, which guideways extend above and below the carrier 32. A tool car- I riage 67 is mounted to reciprocate in the guideways 66 and extends downwardly to within the .frame A and projects to a point over the stock guide 23. Tools 68 are secured to the tool carriage 67 above the stock guide 23 directed toward said stock guide by a clamp plate 69 and set screws 70. A rocking lever 71 is pivoted upon a stud 72 projecting from the partition B of the frame A, and one end of said rocking lever 71 is connected by a link 73 with the lower end of the tool carriage 67. other end of the rocking lever 71 is connected by means of an eccentric rod 74 with an eccentric 75 fast on the driving shaft 2. The action of the eccentric 75 upon the rotation of the driving shaft 2 oscillates the rocking lever 71 which, through the link 73, reciprocates the tool carriage 67. The link 73 forms a laterally yielding connection between the rocking lever 71 and the tool carriage 67, which allows the carrier 32 to move within certain limits without materially affecting the connections just described. The eccentric 75 is set in such a manner that it causes the extreme proximity of the tool carriage 67 to the stock guide 23 to take place at substantially the center point in the forward movement of the carrier 32 and simultaneously with the same position of the tool carriage 52.

It will have been noted that the tools 54 and the tools 61 reach that limit of their stroke nearest the stock guide-23 simultaneously, and it is for this reason, to prevent the cutting edges of the tools meeting and destroying one another that the tool carriages 52 and 67 are set at different points along the stock guide 23. With this construction the tools 54 make horizontal incisions in the stock and subsequently when the stock has traveled a certain distance the tools 63 make vertical incisions exactly registering with those already made by the tools 54 completing the contour of the ornament.

With the present construction the eccentric gears without the aid of the rocking lever 45 produce nearly the required movement of the rocking frame 34 to effect the uniform movement of the carrier 32 to coincide with that of the moving stock, and therefore the cam 48 will require but slight pitch which, of course, is very desirable and renders the machine practicable Where other constructions might fail in view of the heavy work required of a machine of this class.

This machine will take the stock and feed it uni- The.

iormly through and at the same time carve ornaments thereon at regular intervals without in any measure obstructing the passage of said stock. A spring 76 maintains the roll 47 in contact with the cam 48 at all times.

It is obvious that various changes in the details of construction and arrangement may be made to satisfy the required conditions Without departing from the spirit of my invention.

The matterof mounting the tools to move coincidently with the stock feed movement, and which is claimed in combination with the means [or accomplishing this in the present application, is made the subject matter of my copendingapplication, Serial No. 107,023, filed May 12, 1902.

Having described my invention, I claim- 1. In a carving machine, the combination with a support, a guideway on said support, a carrier mounted to reciprocate in said guideway, a stock guide on said support parallel to said guideway, a plurality of tool carriages mounted to reciprocate upon said carrier, a driving shaft mounted on said support, a driven shaft mounted on said support, eccentric gearing between said driving and driven shafts, a crank on one of said shafts, a cam on the other of said shafts, a rocking frame pivoted on said support and engaging at its free end said carrier, a rocking lever pivoted on said rocking frame one end of said rocking lever linked to said crank and the other end of said rocking lever operatively engaging said cam, feed rolls driven from said driving shaft the operative connections between said driving shaft and said tool carriages being organized to effect a reciprocation of said carrier, the forward movement of said reciprocation being of uniform velocity throughout, to effect continuous rotation -of said feed rolls at uniform peripheral velocities equivalent to the velocity of said carrier during said forward movement and to affect the reciprocation of said tool carriages on said carrier timed to cause the moment of nearest approach of said tool carriages to said stock guide at substantially the center point in said forward movement of said carrier.

2. In a carving machine, the combination of a support, a guideway on said support, a carrier mounted to reciprocate in said guideway, a driving shaft mounted in said support, means connecting said carrier and said driving shaft to effect a reciprocation of said carrier, a guideway on and transverse of said carrier, a tool carriage mounted to reciprocate on said latter guideway, a crank driven from said driving shaft, and a guideway in said tool carriage transverse of said tool carriage and parallel to the line of reciprocation of said carrier, said latter guideway adapted to be engaged by said crank to effect the reciprocation of said tool carriage on said carrier.

3. In a carving machine, the combination of a support,

a guide-way on said support, a carrier mounted to rccipro cate in said guideway, a driving shaft mounted in said support, a vertical guideway on said carrier, a tool carriage mounted to reciprocate in said vertical guideway, an eccentric on said driving shaft, a rocking lever pivoted on said support, a connecting rod connecting said eccentric with one arm of said rocking lever, and a link connecting the other arm of said lever with said tool carriage.

-i. In a carving machine, the combination of a support, a guideway on said support, a carrier mounted to reciprocate in said guideway, a stock guide on said support parallel to said guideway, a driving shaft mounted on said support, a rocking frame pivoted on said support engaging at its free end said carrier, a rocking lever pivoted on said rocking frame, a crank driven from said driving shaft and linked to one arm of said rocking lever, a cam driven from said driving shaft and operatively engaging the other arm of said rocking lever, said crank, cam, rocking lever and rocking frame organized to effect a reciprocation of said can rier of uniform velocity in one direction, a plurality of guideways on said carrier transverse of one another and of the line of reciprocation of said carrier, tool carriages mounted to reciprocate in said latter guideways, operative connections between said driving shaft and said tool earriages organized to effect reciprocation of said tool carriages and timed to effect the moment of nearest approach of said tool carriages to said stock guide at substantially the center point of said uniform movement of said carrier, and a feed roll suitably mounted in proximity to said stock guide and positively driven from said driving shaft.

In a carving machine, the combination of a support, a guideway on said support, a carrier mounted to reciprocate in said guideway, a driving shaft mounted in said support, a guideway on said carrier transversely of the line of reciprocation of said carrier, :1 tool carriage mounted to reciprocate in said latterguideway, an eccentric on said driving shaft, a lever pivoted to said support, a connecting rod connecting said eccentric to one arm of said lever, and a link connecting the other arm of said lever with said tool carriage, said eccentric and connections adapted to recipro cate said tool carriage, and said link forming an operative connection capable of yielding in the direction of the line of reciprocation of said carrier.

6. In a carving machine having a stock feed, the combination with a support, a guideway 011 said support, a carrier lnounted to reciprocate in said guideway, a driving shaft mounted on said support, a driven shaft also mounted thereon, a speed varying transmitting connection be tween said driving and said driven shafts, a crank on one of said shafts, a cam on the other of said shafts, a rocking frame pivoted on said support engaging at its free end said carrier, and a rocking lever pivoted upon said rocking frame, one end of which rocking lever is linked to said crank and the other end operatively connected with said cam, all organized to effect the resultant movement of said crank and said cam in said rocking frame to effect a reciprocation of said carrier, the forward movement of which reciprocation being of uniform velocity with the stock feed movement throughout, tools mounted on said carrier, and means for bringing the tools into operative relation with the stock during said forward movement.

7. In a carving machine, the combination with a support having a guideway and a stock guide parallel to said guideway, a carrier mounted to reciprocate in said guideway, a driving shaft mounted on said support, a driven shaft mounted on said support, eccentric gears connecting said driving 'and driven shafts, a crank on one of said shafts, a cam on the other 'of said shafts, a rocking frame pivoted upon said support engaging at its free end said carrier, a rocking lever pivoted on said rocking frame, one end of said rocking lever linked to said crank, and the other end of said rocking lever operatively engaging said cam, all organized to effect a reciprocation of said carrier, the forward movement of said reciprocation being of uniform velocity throughout, tools mounted on said carrier, and means for bringing the tools into operative relation with the stock during said forward movement.

8. In a carving machine, the combination with a support having a guideway and a stock guide parallel to said guideway, a carrier mounted to reciprocate in said guideway, a driving shaft mounted on said support, a driven shaft mounted on said support, variable gearing between said driving and driven shafts, a crank on one of said shafts, a cam on'the other of said shafts, a rocking frame pivoted on said support and engaging at its free end said carrier, a rocking lever pivoted on said rocking frame one end of said rocking lever linked to said crank the other end of said rocking lever operatively engaging said cam, and feed rolls driven from said driving shaft all organized to effect a reciprocation of said carrier, the forward move ment of said reciprocation being of uniform velocity throughout and to effect a continuous rotation of said feed rolls with a uniform peripheral velocity equivalent to the velocity of said carrier during said forward movement, tools mounted on said carrier, and means for bringing the tools into operative relation with the stock during said forward movement.

9. In a carving machine, the combination with a support having a guideway and a stock guide parallel to said guideway, of a carrier mounted on said guideway, a driving and a driven shaft carried by the support, a variable speed device connecting said shafts, a crank on one of said shafts, an actuator on the other of said shafts, a frame pivotally connected to the support and engaging the carrier, a lever pivoted to the frame, one end of the lever being connected to the crank and the other end of the lever operatively engaged by the actuator, transversely reeiprocatory tools on the carrier, a feed device driven from one of said shafts, all organized for elfecting a reciprocation of said carrier, the forward movement thereof being of uniform velocity and elt'eeting a continuous rota tion of the feed device with a uniform peripheral velocity equivalent to the velocity of the carrier during the forward movement, and means for reciprocating the tools into the path of the stock food during its forward movement.

10. In a carving machine, the combination of; a sup port having a guideway and a stock guide parallel to said guidevvay, of a carrier having transverse ways and mount ed on said guideway, a driving shaft carried by the sup- 

